1. A lithium polymer secondary battery comprising: a positive electrode comprising a lithium-containing complex oxide; a negative electrode comprising a material capable of intercalating and deintercalating lithium ions; and a separator interposed between said positive electrode and said negative electrode;
wherein said positive electrode, said negative electrode and said separator contain a polymer electrolyte comprising a polymer material, a non-aqueous solvent and a solute,
and wherein the weight Wp of the polymer material contained in said positive electrode, the weight Wn of the polymer material contained in said negative electrode and the weight Ws of the polymer material contained in said separator satisfy all of the following:
Ws<Wn<Wp(1)20100Wp(WpWnWs)50(2)20100Wn(WpWnWs)50(3)20100Ws(WpWnWs)50(4)
2. The lithium polymer secondary battery in accordance with claim 1, wherein said material capable of intercalating and deintercalating lithium ions comprises at least one selected from the group consisting of a carbon material, an alloy, an oxide and a nitride.
3. The lithium polymer secondary battery in accordance with claim 1, wherein said polymer material comprises an alkylene oxide unit and at least one of an acrylate unit and a methacrylate unit.
4. The lithium polymer secondary battery in accordance with claim 1, wherein said polymer material comprises a polyurethane having a carbonate group.
5. The lithium polymer secondary battery in accordance with claim 1, wherein said polymer material comprises a vinylidene fluoride unit.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus comprising:
a media;
a head over the media; and
a primary-actuator coupled to the head; and
control circuitry, coupled to the primary-actuator and a secondary-actuator, configured to limit a secondary-actuator control slew rate based at least in part on a delta calculation of data from two sample periods.
2. The apparatus as claimed in claim 1 wherein the control circuitry is further configured to limit a secondary-actuator step per sample period.
3. The apparatus as claimed in claim 1 wherein the control circuitry comprises a magnitude and slew rate saturation block.
4. The apparatus as claimed in claim 1 wherein the control circuitry is further configured to calculate a secondary-actuator control for adjusting a position of the head within a localized range on the media.
5. The apparatus as claimed in claim 1 wherein the control circuitry is further configured to scale a head actuation motor feedback based on a position error signal.
6. The apparatus as claimed in claim 1 wherein the control circuitry is further configured to calculate a position error signal from an estimated position and a reference position.
7. The apparatus as claimed in claim 1 wherein the control circuitry is further configured to generate a secondary-actuator control output to self-calibrate the control circuitry.
8. The apparatus as claimed in claim 1 wherein the control circuitry is further configured to limit the secondary-actuator slew rate by reducing a secondary-actuator control step through a decay function, initialization of the secondary-actuator, and power-down of the secondary-actuator.
9. The apparatus as claimed in claim 1 wherein the control circuitry further comprises a shadow magnitude and slew rate saturation block configured to reduce an unpredictable out of plane motion of the head.
10. The apparatus as claimed in claim 1 wherein the control circuitry is further configured to adapt the limit of the secondary-actuator slew rate for a calibration procedure with a predetermined signal of a bias offset.
11. The apparatus as claimed in claim 1 wherein the control circuitry further comprises a secondary-actuator adjuster configured to limit a control step slew rate on a secondary-actuator control interface to limit a head-disk-interaction (HDI).
12. A method operating an apparatus, the method comprising:
flying a head over a media;
controlling a primary-actuator and a secondary-actuator for positioning the head over the media; and
limiting a secondary-actuator control slew rate by control circuitry based at least in part on a delta calculation of data from two sample periods.
13. The method as claimed in claim 12 further comprising limiting a secondary-actuator step per sample period by the control circuitry.
14. The method as claimed in claim 12 wherein the control circuitry comprises a magnitude and slew rate saturation block.
15. The method as claimed in claim 12 further comprising calculating a secondary-actuator control, by the control circuitry, for adjusting a position of the head within a localized range on the media.
16. The method as claimed in claim 12 further comprising scaling a head actuation motor feedback, by the control circuitry, based on a position error signal.
17. The method as claimed in claim 12 further comprising calculating a position error signal, by the control circuitry, from an estimated position and a reference position.
18. The method as claimed in claim 12 further comprising generating a secondary-actuator output, by the control circuitry, to self-calibrate the control circuitry.
19. The method as claimed in claim 12 wherein limiting the secondary-actuator slew rate includes reducing a secondary-actuator control step through a decay function, initialization of the secondary-actuator, and power-down of the secondary-actuator.
20. The method as claimed in claim 12 further comprising a shadow magnitude and slew rate saturation block configured, by the control circuitry, to reduce an unpredictable out of plane motion of the head.
21. The method as claimed in claim 12 further comprising adapting the limit of the secondary-actuator slew rate for a calibration procedure, by the control circuitry, with a predetermined signal of a bias offset.
22. The method as claimed in claim 12 wherein limiting the secondary-actuator control slew rate includes comparing a control step slew rate to a predefined slew rate limit for limiting a control step slew rate on a secondary-actuator control interface to limit a head-disk-interaction (HDI).